核电厂主控室火灾场景分析及风险评价  

Fire Scenario Analysis and Risk Assessment on Main Control Room of Nuclear Power Plant

作　　者：宋维[1] 胡文超[1] 李朝君[1] 陈妍[1] 左嘉旭[1] 史强[1] 郭添榕 SONG Wei;HU Wen-chao;LI Chao-jun;CHEN Yan;ZUO Jia-xu;SHI Qiang;GUO Tian-rong(Nuclear and Radiation Safety Center,Beijing,100082,China;Liaoning Province Shiyan High School,Shenyang of Liaoning Prov.110000,China)

机构地区：[1]环境保护部核与辐射安全中心,北京100082 [2]辽宁省实验中学分校,辽宁沈阳110000

出　　处：《核科学与工程》2018年第5期839-843,共5页Nuclear Science and Engineering

基　　金：国家科技重大专项(No.2013ZX06002001-004)

摘　　要：主控室是核电厂火灾概率安全评价的主要关注对象之一。本文对典型核电厂的主控室火灾场景进行分析并对由其导致的反应堆堆芯损坏频率进行计算评价,主要使用事件树方法演绎火灾场景,通过火灾模拟计算确定火灾场景的危害,最后在电厂内部事件一级PSA模型的基础上建立火灾风险评价模型,完成主控室火灾风险定量化。火灾演绎分析结果获得了4个火灾场景,分别能够导致不同的电厂始发事件,并对相关的操纵员动作产生较大影响。风险定量化结果表明:主控室火灾导致的堆芯损坏频率为1.953×10^(-9)/堆年。The main control room is one of the main concerns of the fire probabilistic safety assessment of nuclear power plant.In this paper,the fire scenario in main control room of typical nuclear power plant is analyzed,and the induced reactor core damage frequency is calculated.The fire scenarios are deduced by the event tree method,and the hazards of fire scene are determined by the fire scenario simulation.Finally,a fire risk assessment model is established based on the internal event level 1 PSA model of the power plant,and the fire risk of the main control room is quantified.4 fire scenarios are obtained from the deduction analysis,which can induce different initial events and have great impact on operator actions.The risk quantitative results show that:the fire induced core damage frequency in main control room is 1.953×10-9/ry.

关 键 词：主控室 火灾概率安全评价 火灾场景分析 堆芯损坏频率 

分 类 号：TL364.5[核科学技术—核技术及应用]